Year	Percent of GDP
2004-01-01	60.8833
2005-01-01	62.8770
2006-01-01	64.9690
2007-01-01	68.5823
2008-01-01	72.8850
2009-01-01	74.9186
2010-01-01	76.1652
2011-01-01	76.8767
2012-01-01	77.4733
2013-01-01	77.7911
2014-01-01	75.5869
2015-01-01	76.9337
2016-01-01	78.8675
2017-01-01	83.0076